feat(app): 添加多模板关于我们页面及相关路由和404页面

- 新增404页面，优化未找到页面体验，避免被搜索引擎索引
- 增加文件代理接口，隐藏真实文件服务器地址，支持文件请求代理
- 实现/article、/case、/product及/page动态路由兼容列表与详情展示
- 添加动态CMS页面兼容入口处理旧式路径，统一路由与SEO设置
- 新增模板1、模板7、模板2、模板3关于我们页面，实现多模板支持
- 模板增强支持CMS单页内容加载及SEO信息动态设置
- 配置环境变量及Git忽略文件规则辅助开发和构建环境管理

app/templates/template-04/pages/ProductDetail.vue

@@ -0,0 +1,114 @@
+<template>
+  <div class="min-h-screen py-16 bg-[#1a1a1a]">
+    <div class="container mx-auto px-4 sm:px-6 lg:px-8">
+      <div v-if="product" class="max-w-5xl mx-auto">
+        <div class="mb-8">
+          <NuxtLink :to="`/product${product?.navigationId ? '?navId=' + product.navigationId : ''}`" class="text-sm text-[#a89f8f] hover:text-[#d4af37]">← 返回产品列表</NuxtLink>
+        </div>
+
+        <div class="grid lg:grid-cols-2 gap-10 mb-12">
+          <div class="aspect-video bg-[#2e2e2e] rounded-3xl overflow-hidden">
+            <img
+              v-if="product.cover"
+              :src="fileUrl(product.cover)"
+              :alt="product.productName"
+              class="w-full h-full object-cover"
+            >
+          </div>
+
+          <div>
+            <h1 class="text-3xl font-bold text-[#f5f0e6] mb-4">{{ product.productName }}</h1>
+            <p v-if="product.subtitle" class="text-lg text-[#a89f8f] mb-6">{{ product.subtitle }}</p>
+            <p class="text-[#a89f8f] leading-relaxed mb-6">{{ stripHtml(product.description) }}</p>
+            <div v-if="product.price" class="text-2xl font-bold text-[#d4af37] mb-6">
+              {{ product.price }}
+            </div>
+            <button
+              type="button"
+              class="inline-flex items-center justify-center px-8 py-3 bg-[#d4af37] text-[#1a1a1a] font-semibold rounded-full hover:bg-[#c19b2e] transition-colors"
+              @click="openConsult({ need: `咨询产品：${product.productName}`, source: 'product-detail' })"
+            >
+              立即咨询
+            </button>
+          </div>
+        </div>
+
+        <div class="border-t border-[#333333] pt-10">
+          <h2 class="text-2xl font-bold text-[#f5f0e6] mb-6">产品详情</h2>
+          <div class="cms-content">
+            <RichText :content="product.content" />
+          </div>
+        </div>
+      </div>
+
+      <div v-else class="text-center py-20">
+        <h1 class="text-2xl font-bold text-[#f5f0e6] mb-4">产品不存在或已下架</h1>
+        <NuxtLink :to="`/product${product?.navigationId ? '?navId=' + product.navigationId : ''}`" class="text-[#d4af37] hover:underline">返回产品列表</NuxtLink>
+      </div>
+    </div>
+  </div>
+</template>
+
+<script setup lang="ts">
+import type { Product } from '~/types'
+
+/**
+ * 模板 4 - 产品详情页（暗金商务风）
+ */
+const route = useRoute()
+const id = route.params.id as string
+const { fileUrl } = useFileUrl()
+const { openConsult } = useConsult()
+
+const { data: product } = await useFetch<Product | null>(`/api/product/detail?id=${id}`, {
+  key: `product-${id}`
+})
+</script>
+
+<style scoped>
+.cms-content :deep(h2) {
+  font-size: 1.5rem;
+  font-weight: 700;
+  margin: 1.2em 0 0.6em;
+  color: #f5f0e6;
+}
+.cms-content :deep(h3) {
+  font-size: 1.25rem;
+  font-weight: 700;
+  margin: 1em 0 0.5em;
+  color: #f5f0e6;
+}
+.cms-content :deep(h4) {
+  font-size: 1.1rem;
+  font-weight: 700;
+  margin: 0.8em 0 0.4em;
+  color: #f5f0e6;
+}
+.cms-content :deep(p) {
+  margin-bottom: 1em;
+  line-height: 1.8;
+  color: #d8d2c4;
+}
+.cms-content :deep(a) {
+  color: #d4af37;
+  text-decoration: underline;
+}
+.cms-content :deep(img) {
+  max-width: 100%;
+  height: auto;
+  border-radius: 0.75rem;
+  margin: 1em 0;
+}
+.cms-content :deep(ul),
+.cms-content :deep(ol) {
+  padding-left: 1.5em;
+  margin-bottom: 1em;
+  color: #d8d2c4;
+}
+.cms-content :deep(li) {
+  margin-bottom: 0.4em;
+}
+.cms-content :deep(strong) {
+  color: #f5f0e6;
+}
+</style>